Novel compounds of the formula: ##EQU1## and their use as miticides and mite ovicides, wherein: R.sub.1 is hydrogen, methyl or ethyl; R.sub.2 is methyl, ethyl, methoxy, phenyl, dimethylamino or 2-(dimethylamino)ethyl; R.sub.1 and R.sub.2 can be taken together to form ##EQU2## --(CH.sub.2).sub.n --, or --CH.sub.2 CH(CH.sub.3)--O--CH(CH.sub.3)CH.sub.2 -- where n is 4 or 5, provided that, when R.sub.1 is hydrogen, R.sub.2 must be dimethylamino or 2-(dimethylamino)ethyl.
式子为:##EQU1##的新化合物及其作为
杀螨剂和螨卵剂的用途,其中:R.sub.1为氢、甲基或乙基;R.sub.2为甲基、乙基、甲氧基、苯基、二甲基
氨基或2-(二甲基
氨基)乙基;R.sub.1和R.sub.2可以结合形成##EQU2##--(CH.sub.2).sub.n --或--CH.sub.2 CH(CH.sub.3)--O--CH(CH.sub.3)CH.sub.2--,其中n为4或5,但当R.sub.1为氢时,R.sub.2必须为二甲基
氨基或2-(二甲基
氨基)乙基。